What is the difference between a bacterial food borne illness and a viral one?

Apples/oranges. Bacterial food borne illness often from undercooked, and/or contaminated food. Any uncooked animal product considered contaminated. Any raw, unwashed fruit/veg may be contaminated, so wash them before eating. Wash your hands before cooking, eating. Viral food borne illness includes hepatitis a, found in contaminated sea food, more commonly from food handlers. Other viral inf can cause GI sx.